# Decade vs When'd I

The clearest difference is price: Decade at Free against When'd I's $2.99. Decade also leads on update cadence (daily vs every 4 days). When'd I's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Decade is free to download; When'd I costs $2.99 up front. Decade sells 1 one-off in-app purchase. When'd I asks for nothing beyond the download.

Decade ships an update daily, When'd I every 4 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Decade | When'd I |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/whend-i/id6801866888/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 90.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 4 days |
| Monetization | — | Paid |
| Best chart rank | — | **#89** |
| Size | 58 MB | 31 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ZIH LONG GUO](https://appshunter.io/developer/6801395405) | [HyunWoo Lee](https://appshunter.io/developer/6791167449) |

## What reviewers say

### Decade

[App page](https://appshunter.io/ios/app/decade-habit-tracker/id6801395403)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decade Pro | $4.99 | one-time |


### When'd I

[App page](https://appshunter.io/ios/app/whend-i/id6801866888)

**Currently charting:** #89 Top Paid · Productivity (US App Store)

This app helps you track when you last performed specific tasks or activities. It visualizes the time elapsed since your last action and allows you to add photos and notes to each entry. Features include widgets and lock screen access for quick logging and checking.

**Highlights:** Track last performed activities, Visualize time elapsed, Add photos and notes, Home screen widgets, Lock screen logging, Optional evening nudge

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Decade free?

Decade is free to download, with in-app purchases available.

### Is When'd I free?

When'd I costs $2.99, with no in-app purchases.

### Do Decade or When'd I have ads?

Decade shows ads; When'd I does not.

### Which is updated more often, Decade or When'd I?

Decade ships an update daily, and When'd I every 4 days. Most recently, Decade was updated on October 25, 2026 and When'd I on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*